Black hole and Hawking radiation by type-II Weyl fermions

TL;DR

This paper explores how type-II Weyl fermions can simulate black hole horizons and Hawking radiation in condensed matter systems, potentially allowing room-temperature Hawking radiation in Weyl semimetals.

Contribution

It introduces a model where overtilted Weyl cones mimic black hole horizons, linking condensed matter physics with black hole phenomena and Hawking radiation.

Findings

Hawking temperature can reach room temperature in Weyl semimetals.

Black hole regions can be simulated by overtilted Weyl cones.

Electronic state filling leads to Hawking radiation in these systems.

Abstract

The type-II Weyl and type-II Dirac fermions may emerge behind the event horizon of black holes. Correspondingly the black hole can be simulated by creation of the region with overtilted Weyl or Dirac cones. The filling of the electronic states inside the "black hole" is accompanied by Hawking radiation. The Hawking temperature in the Weyl semimetals can reach the room temperature, if the black hole region is sufficiently small, and thus the effective gravity at the horizon is large.